Subject: Re: Problems with ath(4)
To: Steven M. Bellovin <smb@cs.columbia.edu>
From: Ed Gould <ed@left.wing.org>
List: current-users
Date: 08/22/2005 16:21:50
Steve Bellovin wrote:
> In message <87acj97kb8.fsf@snark.piermont.com>, "Perry E. Metzger" writ=
es:
>>
>>Vincent <10.50@free.fr> writes:
>>> Perry E. Metzger a =E9crit :
>>>> I've found that under -current, continuously pinging the base =
station
>>>> stops the disconnections. That doesn't explain what the problem is,
>>>> though.
>>>
>>> True. The disconnections happen after a while when the link is
>>> idle. Never while I 'cvs update', though ;)
>>
>> They only happen to you on WEP links you say? Any other info you have
>> on the nature of the problem?
> =
> I missed the beginning of this thread, but I've had problems with my =
> default route -- on ath0 and wi0, and going back a couple of years -- =
> going away for no apparent reason. It doesn't matter whether WEP is on=
=
> or off. I've posted about this a few times, in fact. The problem is =
> related to carrier dropping -- at least, I see the carrier drops since =
> I run ifwatchd.
Under a recent -current (3.99.7, built 3 August from then-latest =
sources) I started seeing failures where ath0 would disconnect when =
idle for a long time (e.g., over night). Only a reboot would recover =
it. When I removed the card and reinserted it, I got a message about =
not being able to allocate descriptors (or some such - it was a week or =
so ago that I saw this message, and I'm not sitting at that machine to =
reproduce the failure just now). (I haven't built anything more =
recent, since I don't have the time just now to deal with the 64-bit =
link change.)
I have also seen, but less often, a failure where wi0 (I use that when =
ath0 has failed) disconnects, but re-running dhclient recovers it.
--Ed